Both of those look like good quality builds. I'm leaning toward the E-bay one b/c of cost, but I have some reservations considering it comes from China and I have had some poor quality products from them in the past. Shipping also takes forever. However, the Ultralasers model looks really good, so its almost a toss up.
Theres a review here somewhere on the ebay ones, in fact i thought it was Elektrofreak who did the original review and showed it being quite a bit over the rated power.
Thanks for the review, based on that I think I'll try the e-bay module first considering this is my first scanner an I don't plan on going all out on it.